Will domain-joined machines running Windows 7 or Windows 8.1 Pro editions be eligible for the free upgrade if they're not volume licensed but just run at a small business?

Da Costa said that "they will qualify, but you will have to log into a local Administrator account and initiate the upgrade." He also clarified in another post that organizations with multiple devices to upgrade would need to establish upgrade reservations for "each of your eligible Windows devices." Da Costa noted that while that's "not a suitable procedure … it's the only option available."

There's been a lot of discussion on this lately; basically for now the free upgrade is targeted at consumers, so while any Pro install is eligible, it's our problem that we have to upgrade in place then reimage.